Games that you are proud that you have beaten.

[Dylan]

Earthworm Jim 3D. That game was amazingly frustrating, I beat it when I was younger.

[Limewater]

I beat Terminator 2 on gameboy (the side-scroller one, not the arcade port). It really wasn't that hard, but I've since seen it on lists of very hard games, so I guess not that many people finished it. It wasn't very good.

[Gamerforlife]

Megaman
Teenage Mutant Ninja Turtles(NES)
Ninja Gaiden
Ninja Gaiden II
Zelda II
The Adventures of Batman and Robin(Genesis)
Shinobi(PS2)
Maximo
Maximo:Army of Zinn
MDK(Dreamcast)
Battletoads in Battlemaniacs
Final Fantasy 12(defeated all optional marks and bosses, some of which took AT LEAST an hour of nonstop playing)
Final Fantasy X(conquered the monster arena)
Ninja Gaiden(Xbox)on Master Ninja difficulty
Ninja Gaiden 2(Mentor mode-got two levels in on Master Ninja mode)
The Dishwasher Samurai(that game was tougher than it looked)
Earthworm Jim
Tenchu 2(All Grandmaster ranks, which required perfection in some levels)
Stranglehold on Hardboiled difficulty

That's all I can think of at the moment. I'm always up for a challenge

[Lord_Santa]

Kid Icarus - NES

may not be the toughest game in the line, but it was quite challenging to me

(I played through it in one sitting)

[sevin0seven]

the first time i beat Super Mario Bros. 3 and Super Castlevania 4 was a proud moment for me when i was younger.

[lisalover1]

I'm always surprised how few people have beaten the original Super Mario Bros. I beat it, and it's a badge of honor.

Also, I feel awfully good about myself for beating all the challenge stages in Mario Kart DS.

[Hatta]

Nethack!

[Gamerforlife]

I'm always surprised how few people have beaten the original Super Mario Bros. I beat it, and it's a badge of honor.

Me too, SMB was one of the first games I owned. So I didn't have much else to play. It was Mario and Double Dragon, both of which I beat

[Limewater]

Nethack!

I still don't believe you.

However, in the hypothetical "what if" scenario where you had beaten the game, would you happen to recall how long that particular play took you and your character class and alignment?

[RokstaEnSweden]

Two words; Ninja Gaiden. Grueling!

I am SO close to beating Super Ghouls n' Ghosts, I can get to the second to the last boss on the second play through, but I ALWAYS run out of time. I've cheated myself and warped to the very last boss, just to make sure I could beat it (I can), but I don't feel good about beating the game like that.

Nethack is impossible. I don't believe it either.